Facebook debugger: why complaining about app_id missing

Question

While using the facebook debugger, it complains:

Warning fb:app_id hasn\'t been included in the meta tags. Specify the app ID so that stories shared to

Answer 1

This means your page is missing the fb:app_id meta tag.

Missing Properties The following required properties are missing: fb:app_id

You must use the fb prefix (the og prefix won't work!)

The meta tag should look like this (replace the app id "474629550209194" below with your own)

The meta tag is fb:app_id - og:app_id (open graph) won't work.